3 Boxgrove Court Monkston Milton Keynes MK10 9FW

1. 16 Feb 2023

   Received by Milton Keynes

2. 13 Apr 2023

   Decision issued: Approved

3. 1 Sep 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 42 Boxgrove Court Monkston Milton Keynes MK10 9FW

  23/00145/CLUP Submitted 20 Jan 2023 27m away

  Certificate of lawfulness for a loft conversion with dormer extension to rear roofslope and rooflights to front roofslope.

  Granted Lawful development Extension Loft or dormer 4 docs

• 33 LILLESHALL AVENUE, MONKSTON, MILTON KEYNES, MK10 9FZ

  PLN/2026/0808 Submitted 21 Apr 2026 95m away

  Proposed erection of single-storey front and rear extensions following the demolition of the existing apex roof; installation of a new flat roof with parapet wall and four rooflights

  Granted Householder Extension Loft or dormer +1 16 docs
  Small domestic

• 23-32 Boxgrove Court Monkston Milton Keynes MK10 9FW

  22/01269/FUL Submitted 17 May 2022 107m away

  Retrospective change of use of the existing use of amenity land to the rear of gardens to be used as private garden space

  Granted Full applications 10 docs

• 7 BRINKBURN CHASE, MONKSTON, MILTON KEYNES, MK10 9GT

  PLN/2025/1747 Submitted 21 Aug 2025 118m away

  Certificate of Lawfulness for the proposed loft conversion with rooflights to rear elevation

  Granted Lawful development Loft or dormer 4 docs

• 167 Blanchland Circle Monkston Milton Keynes MK10 9GR

  19/02501/DISCON Submitted 30 Sep 2019 148m away

  Details submitted pursuant to discharge condition 4 (Car parking space and dropped kerb/crossover) attached to planning application 19/01332/FUL

  Decided Conditions 8 docs

• 5A Parkminster Monkston Milton Keynes MK10 9GN

  20/00487/FUL Submitted 24 Feb 2020 198m away

  Two storey rear extension and internal/external alterations to include 2 new window openings in the side elevation

  Withdrawn Full applications Extension Windows or glazing 10 docs

• PLN/2026/1586 Withdrawn

  4 BROMHAM MILL, GIFFARD PARK, MILTON KEYNES, MK14 5QP

  Certificate of lawfulness for the proposed garage conversion and side extension

  29 Jul 2026 Lawful development
• PLN/2026/1370 Refused

  15 CASTLE ROSE, WOUGHTON PARK, MILTON KEYNES, MK6 3BQ

  Certificate of lawfulness for the proposed construction of a low brick wall with railings (1.5 m overall), brick piers, sliding gate set 5 m from road, and pedestrian gate within domestic curtilage

  29 Jun 2026 Lawful development
• PLN/2026/1393 Refused

  2 GREATCHESTERS, BANCROFT, MILTON KEYNES, MK13 0PA

  Certificate of lawfulness for the proposed demolition of existing conservatory, erection of a new rear extension, infill the space under the carport and loft conversion with a rear dormer

  2 Jul 2026 Lawful development
• PLN/2026/1741 Awaiting decision

  5 Spring Mews, Sherington, MK16 9FT

  Certificate of lawfulness for the existing detached rear outbuilding for use as a garden studio

  18 Aug 2026 Lawful development
• PLN/2026/1170 Granted

  61 WINDSOR STREET, BLETCHLEY, MILTON KEYNES, MK2 2LN

  Certificate of lawfulness for proposed loft conversion with rear and side dormer extension and rooflights to front roof slope

  2 Jun 2026 Lawful development